How to Test That MVC DocumentProvider Has Returned Items

Hi!

When building an MVC site, what is the best method to test that an item has been returned by a DocumentProvider?

Is the best method to use try/catch like I have below:

        try
        {
            //Get Kentico Object
            //Kentico Object with Retrieve CCB data and store in the CcbEventData property
            var ev = (from e in CcbEventProvider.GetCcbEvents().Published()
                      where e.EventName == eventName
                      select e).First();

            return View(ev);
        }
        catch (InvalidOperationException ex)
        {
            throw new HttpException(404, "Event Not Found");
        }

I just want to be sure I'm handling this the best way.

I could always call Count() first, but then I'm technically making two queries, which seems to add unnecessary overhead.

Thanks!

-Eric